Electric measuring circuit with transient balance control



o,ooo,oof v 7- Grid drop fng resfstof loo n1egohn node1ood fesistof l" ohms- 2 o Anode mter oapoo1tof u mfd .01 Tnp lnput capEcitor l l fnfd .05 Tfip 1nput grid lealk ohmo 32 ooo Tff inpuf lin11tin fesfstof lfI do 22o,ooo

Tri fn ut o1tef oo ooftor l=o -mmfd 25o Trip anode reStor ohn1s 220,000 Tfip oothode feSistof do lo,000 Tff oothode oo ooitor loo mfd .oo5 Trfp output coup1ing oopooitor o mfd .05-

Bela oontfo1 Hmiong fesistof o ohms 220,ooo

Beloy oontfol gfid leok "8 do 220,000 ffelay oontfo1 in ut ffltof oo ocftof !of oomfd 350 Sfofage ca acitof fso mfd f Limitin reSistor lsl ohms 47oooo BeSet anode Tesistof do 220 o00 oommutating copooitor f mfd .of Beset input cou lin oopooftor nf mfd .05 ffesef in ut ff1te oo ooitof oo -nmfd o Beset dfode lood !of ohms 22o ooo whne the tri a arotus Hlustrated os contro1- nng tne opefotion of tho toppef bof inoofporotes a pair of yaouum tubos, ft is to be undefstood thot the use of ony type of tfip oppoTotus chofoctorized by ot least tWo oondftfons of e unibrfum so arated by o Tegfon of olstobinty is contem 1oted fn Whioh one of the othef of tho tWo stoblo oon ditions moy be estobHshed by the oppHootfon of tffo ond feSet pulses to the pfop input tofmf nals. It is further obvfous that the devioe of deviceS fesponsive to the output of th1s fneosuring o1Touit moy fespond os visuo1 indicotofs of moy indicate theff res onse b effeoting o contro1 operotion. The tern1 indiootfng device os used hefein fS intended to embfooo both t pes of oporafion.

Te invention moy be ombodfed in othe1 spe offfo forIns Without depofting ffom the s frft of eSSential oharocteristicS thefeof. Te pfeSont embodiment is thefefofe to be oonsidefed fn o11 res ects aS inustrotive ond not Testrfctfve, the sco e of the inventfon befn indfcotod by the oppended claifns fother thon by tho fofegoing do scription, 8nd B11 ohangeS Wch oome Within the meoning ond fonge of equivolentS of the oloims ofe thefefofe intonded to be embfoced thefeby.

vhat is olaimed ond desfre to oe secured by United stotes fottefs Potont fs:

L In eleotric n1eosufing o ofotus, me ns adapted to receive a potenti 1 under test, moons for developfng a search otentfo1 vofying tfffough o fneasufing fange, n1eons fof supefpoofng on oofd sealroh potentio1 8 penodic eleotfio enofgy Wove, cifouft meons adopted to feceivo sofd seofoh.potentiof With its su er osed Wovo ond sofd potena ood restonog fnput termfnofs, meons for opoo. fng o f11'ot ooergfzfog lmpuBo of tho ffequonoy of BMd peiodio w8ve to solld trip tofm1no,lo whon sofd otentfo1 undof fost ond soid sooroh-pofoot11 bear 8 predeteZmined nutus1 e18t1onBh1n ood meons for o pl fo o sooond onorgfzfog fmufoe to sofd reotonng teronnols ourfng tho fo.

beof o pfedetefmined felotion fo one onothof,

Whofeby o current oows fn ulses of the fre uoooy of soid efiodic Wavo, on om lfoef responsfve to the oW of soid ouffent pulseS, ond indfcot1ng meons fosponsfve to the output of soid am lfoef.

In electric measuTing app Tatus, 1neons odopted to feceive o potontio1 under test, moono fof -dovoloping o seoroh potentiol SWeopfng throu h o meosurin ronge in a predetern1fnod senSe, unnotorony oonducting meons conneofod betWeen safd soorch otontio1 ond sald oton under tost W1th such polorff thot sofd unnoterony conducting fneons is substantiony nonooo dootfve of tho initfotfon of the mooSunng sWoop, mean for supefposing o perfodio electffo vot age on soid seofch potentioL soid unnotorony conducting means becoming conductive When sofd potontio undef tost ond sofd seofoh potonuo1 boof o predetermfned folotfon to one onothof, Whefeby o ourfent noWs 1n pulsos of the f'o quonoy of sofd peffodfc Wove, o^ooupling offouff fespons1ve to the noW of soid ourfent pulsoo, moono supprossing pu1sos othe1 thon those of o predetermined polonty, ond indicating meons fo sponsive to the ut ut of soid ooupung ofronft.

5. In eleotno meosunng opporotus, 5 nfot source of efeofffc voltogel o second soufoo of eleotffo voltoge, o soofoh soufoe of penodfoony vofy fng olootrfo voItago, meons connectfn sofd soofoh soufoo vvfth sofd ofst soufoo When sofd sooroh voltago fs less fhon sofd orst soufco voltoge, moons connocong s id seofch soufce Wfth sofd socood source When said seoroh vo1fogo is gfootef thm soid socond souroo voltage, ond fnd1ooting mo8ns fesponsive to the ourfents noWfng fff tho oon nections so estalblished.

6. In eleotfic moosuffng opporotus, ol soufce of eleotffo voltoge ying Within o pfedo termfned fonge, o second soufce of eleotrfo voftogo lyfng Without said predetennined mnge. 8 seorch soufce of poffodioolly vorying olectffc voltogo.

meons connecting sofd seoroh source Wfth sofd nfst souToe when soid search voftoge fs 1ess th sMd nrst source vo1tage means connecting s8ld sooroh soufce vvfth soid second souroe When sofo search voltoge is reoter thon sofd second soufoo voltoge, and indicoting nfeans reS onsfve to tho curtents noWing in the connections so tblishedl 7. In eleotrfc meosunng oppofatus, o nfst unf loterony conducting devioo ond o seoond unnot efany oonducting devloo conneoted fn sofloo, meons fof periodioony vorying the potentfo1 of the junctfon betWeen sofd unnotefany oonduoffng devfoes, moons odopted to fmpress ol potontiol 

